Help for the creation of my sketches.

Hello all,
I would like to make two figures this summer but it is not easy and I would like to have some important advice for a beginner that would like to have two amazing figures. What material can I use for the creation of my figures and how can I sculpt the details, ...
THANK FOR YOUR ANSWERS:sunny:

HERE ARE MY TWO SKETCHES ( BINTURONG AND MEGATHERIUM)

Good sketches! You need to create wire skeletons now. Then you can start sculpting, I recommend Super Sculpey, you can also use Apoxie Sculpt or Apoxie Clay. Try to find sculpting tools like scalpel, knife and others, some you can buy in shops for collectors of military modes and such. You can search sculpting tutorials here and there in internet, just type it in google :) Good luck!!! If you have more detailed questions during the work, just ask   (and post photos, then we can comment even more :) )

THANK YOU ANA:D

Those are some very good drawings You are very talented... And so young! You can go far with this I believe :)

THANK YOU Carola 

Superb sketches Florian. Good luck and have fun with the next stages.

Thank you Chris.